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 Common problems and treatment methods of fire prevention board

Fire prevention board, fireproof board, scientific name for the thermosetting resin impregnated paper high Pressure laminated board, abbreviations for HPL {Pecorative high - Pressure Lcminate} is surface decorative building materials, refractory has the rich surface color, texture and special logistics performance, widely used in interior decoration, furniture, kitchen cabinets, lab table surface, wall, etc. Fire prevention board is the original paper (titanium powder paper, kraft paper) after melamine and phenolic resin impregnating process, high temperature and high pressure.

Defects and solutions in the production of fire prevention board.

There are white flowers on the board.

Causes:

1. The surface paper contains insufficient glue or local resin curing in drying.

2. Low volatile content of surface paper.

3. Uneven pressure pressure.

4. The material is not elastic.

5. Stainless steel plate indicates uneven.

6. The resin is too old, the molecules are too large, and the resin is liquid.

Solutions:

1. Improve the resin content of surface paper or control the drying temperature to prevent the curing of local resin.

2. Improve the volatile content of surface paper.

3. Check the heat press and improve the uniformity of pressure surface.

4. Regularly change the material of the mat.

5. Regular polishing of stainless steel plate.

6. Resin shall be analyzed and tested, and the use shall be stopped when the unqualified indexes are required.

2. There are wet flowers (water vapor) on the board, and the edges are more serious.

Causes:

1. The content of volatiles after drying is too high.

2. The solvent used for printing ink or dye is not suitable.

3. Moisture absorption of adhesive paper after drying

Solutions:

1. Reduce the volatile content after drying.

2. Transfer the solvent used in ink (dye).

3. Pay attention to the storage of the film, which can be covered with plastic cloth.

3. Surface cracking of decorative plates.

Causes:

1. The resin is too soft and the molecules are too small.

2. Resin curing is not complete.

3. The amount of glue in the surface film is too high.

Solutions:

1. The unqualified resin will not be used.

2. Increase the temperature of hot pressure or extend the time of hot pressing.

3. Control the glue content of the surface film paper.

4. Layering of decorative plates.

Causes:

1. The content of the adhesive paper is too low, and the film is cured by local resin when drying.

2. Insufficient resin content of the film.

3. Low pressure or insufficient thermal pressure time.

4. There is sundry between film and paper.

Solutions:

1. Control volatile matter content should not be too low, dry temperature should not be too high, the time should not too long, prevent the resin local curing.

2. Improve the glue content of the adhesive paper.

3. Increase the pressure including prolonged heating time.

4. Pay attention to the debris when laying the mold.

5. Decorative plate warping.

Causes:

1. The thickness of various original tissues is uneven.

2. The adhesive volume of the adhesive paper is uneven and the pressure is inconsistent everywhere.

3. Unable to fully cool down after insulation.

Solutions:

1. All kinds of original paper should meet the technical requirements.

2. Keep the resin concentration even and adjust the clearance of extrusion roller.

3. Cooling to below 50 degrees is under pressure unloading.





Shandong Ruiheng Wood Co.,ltd
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E-mail:ruihengwood@hotmail.com
Address:Yitang road, yitang town, lanshan district, linyi city.

We mainly produce HPL overlay plywood.MDF; Acrylic overlay plywood. MDF. OSB board, PVC overlay MDF, PVC overlay plywood, paper overlay MDF, UV board and other high-grade decorative board





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